7.68+0.32÷2.5有简便方法吗?
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0.32÷2.5
=32/100÷25/10
=8/25×10/25
=8/5×2/25
=16/125
=0.128
7.68+0.128=7.808
(7.68+0.32)÷2.5
=8÷2.5
=3.2
=32/100÷25/10
=8/25×10/25
=8/5×2/25
=16/125
=0.128
7.68+0.128=7.808
(7.68+0.32)÷2.5
=8÷2.5
=3.2
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展开全部
可以部分简算
7.68+0.32÷2.5
=7.68+(0.32×4)÷(2.5×4)
=7.68+1.28÷10
=7.68+0.128
=7.808
7.68+0.32÷2.5
=7.68+(0.32×4)÷(2.5×4)
=7.68+1.28÷10
=7.68+0.128
=7.808
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你对这个回答的评价是?
展开全部
7.68+0.32÷2.5
=7.68+(0.32×4)÷(2.5×4)
=7.68+1.28÷10
=7.68+0.128
=7.808
=7.68+(0.32×4)÷(2.5×4)
=7.68+1.28÷10
=7.68+0.128
=7.808
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已踩过<
评论
收起
你对这个回答的评价是?
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